You will most definitely require a home security power supply that provides proper current and voltage to power up your CCTV cameras. However, in most analog cameras, you have a centralized power supply that simultaneously provides power to multiple cameras. Connecting one is relatively straightforward because the power supply’s terminals are labeled. The power supply also comes bundled with an AC power plug that you typically plug into your 120V outlet. However, experts recommend using a home security power supply with a high-efficiency rating to avoid overload issues. Moreover, when powering up CCTV cameras, it is vital to determine the amount of current every camera consumes to ensure that you purchase a power supply with the appropriate current rating.
Typically such details are printed on the back of the camera or security system or sometimes mentioned in the instruction manual. In addition, the power rating is typically donated by Wattage(W). With that out of the way, let us look at a scenario to understand what type of home security power supply you will need to operate your security devices. Imagine you’ve installed sixteen cameras inside your home. Assuming that you will use the power supply to power the cameras, not the DVR, we must do a few simple calculations. For example, if every camera draws 0.35A, you will have to multiply 0.35 by 16 to calculate the total current draw for sixteen cameras. Then take the result, which is 5.6A, and divide it by the maximum 80 percent capacity. The answer you get is 7A. This means that you must purchase a power supply that has a current rating of 7A if you’re looking to power 16 cameras simultaneously with one power supply.
Furthermore, various other home security power supplies come with individual connections and fuses for every camera you want to connect. Moreover, such a home security power supply also has a small LED indicator that turns off when your camera is disconnected or malfunctioning. For example, you can purchase a CCTV power supply that can power 18 cameras simultaneously with a centralized 12V 10A rating. Now that you have all the knowledge about choosing the right power supply, it’s just the question of calculating current and voltage consumption for your home security system and purchasing one that can accommodate such power requirements. Of course, this will be a lot easier if you have a good grasp of basic maths concepts!